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0 item @ $0.00  

Rare Mineral Species of Langban & Harstigen, Sweden

Tuesday, 30 May 2017 06:30 PM

Somewhat kin to Franklin in terms of geology and mineralization, this area is also famous for its rare species. We will have some older material available. It's in short supply!

Ericssonite

with Rhodonite - #PD46950
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
BaFe3+Mn2+2O(Si2O7)(OH) 
Availability
Sold
Size
4.5 x 2.5 x 2 cm - Miniature 
Special Info
Type Locality 

Deep red coarse plates of Ericssonite to 1mm with Rhodonite.


Ericssonite

Formula
BaFe3+Mn2+2O(Si2O7)(OH) 
Crystal System
Monoclinic 
Crystal Habit
Massive, Platy 
Cleavage
Perfect, Distinct, None 
Luster
Sub Metallic 
Color
reddish black 
Streak
brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
4.5 
Collection
Phillips Collection
Special Info
Type Locality

Fredrikssonite

#DS46934
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
Mg2Mn3+O2(BO3
Availability
Sold
Size
3 x 1.5 x 1 cm - Thumbnail 
Special Info
Type Locality 

Black acicular crystals to 4mm embedded in matrix. Rich.


Fredrikssonite

Formula
Mg2Mn3+O2(BO3
Crystal System
Orthorhombic 
Crystal Habit
Prismatic 
Cleavage
Poor, Indistinct, None 
Luster
Vitreous (Glassy) 
Color
reddish brown 
Streak
yellowish brown 
Class
Orthorhombic - Dipyramidal 
Hardness
Collection
Shultz Collection
Special Info
Type Locality
SOLD
Gonyerite - BM46940
Gonyerite - BM46940

Gonyerite

#BM46940
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
Mn2+5Fe3+(Si3Fe3+)O10(OH)8 
Availability
Sold
Size
2.5 x 2 x 2 cm - Thumbnail 
Special Info
Type Locality 

Deep red platy crystals to 3mm in radial, flat rosettes.


Gonyerite

Formula
Mn2+5Fe3+(Si3Fe3+)O10(OH)8 
Crystal System
Orthorhombic 
Crystal Habit
Radial, Platy 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
dark brown, brownish black, bright green 
Streak
chocolate brown 
Class
Orthorhombic 
Fracture
Flexible 
Hardness
2.5 
Collection
McConlogue Collection
Special Info
Type Locality
Mineralpedia
View Gonyerite
On Dakota Matrix
Previously Sold Gonyerite
On Dakota Matrix
Other Available Gonyerite
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Mindat
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Hausmannite

with Bixbyite - #PD46949
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
Mn2+Mn3+2O4 
Availability
Sold
Size
6 x 4 x 3 cm - Sm Cabinet 

Granular Hausmannite, originally called vredenburgite, a mixture of Jacobsite and Hausmannite. There are also Bixbyite in the Hausmannite seen as "ghost" square outlines. Minerals Unlimited with specific locality information: Upper Bolivia Stope, 185 meter level. See prov. tab.


Hausmannite

Formula
Mn2+Mn3+2O4 
Crystal System
Tetragonal 
Crystal Habit
Massive - Granular, Pseudo Octohedral 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
brownish black, grayish 
Streak
dark reddish brown 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Uneven 
Hardness
5.5 
Collection
Phillips Collection

Hedyphane

#DS46932
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
Ca2Pb3(AsO4)3Cl 
Availability
Sold
Size
5 x 5 x 2 cm - Miniature 
Tagged
arsenate  
Special Info
Antique Specimen 
Special Info
Type Locality 

Rich beautiful crystalline mass of uncommon lilac colored Hedyphane. See prov. tab for old Riksmuseet, Stockholm label!!


Hedyphane

Formula
Ca2Pb3(AsO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Massive - Granular, Crystalline - Coarse 
Cleavage
Imperfect, None, None 
Luster
Adamantine - Resinous 
Color
blue, gray white, yellowish white, white 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Uneven 
Hardness
4-5 
Collection
Shultz Collection
Special Info
Antique Specimen
Special Info
Type Locality
Mineralpedia
View Hedyphane
On Dakota Matrix
Previously Sold Hedyphane
On Dakota Matrix
Other Available Hedyphane
WebMineral
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Mindat
View Hedyphane

Heliophyllite

#46793
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
Pb6As2O7Cl4 
Availability
Sold
Size
Chip < 1cm 

Yellow fibrous crystals. Rare for Langban.


Heliophyllite

Formula
Pb6As2O7Cl4 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular 
Cleavage
Good, None, None 
Luster
Vitreous - Greasy 
Color
greenish yellow, yellow 
Streak
light yellow 
Class
Orthorhombic 
Hardness

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